package com.cgt.springboot.util;

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.PutObjectRequest;
import com.aliyun.oss.model.PutObjectResult;

import java.io.InputStream;

public class AliOSSUtil {
	// Endpoint以华东1（杭州）为例，其它Region请按实际情况填写。
	private static final String ENDPOINT = "https://oss-cn-beijing.aliyuncs.com";
	// 从环境变量中获取访问凭证。运行本代码示例之前，请确保已设置环境变量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。
	//EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
	private static final String ACCESS_KEY_ID = "LTAI5tCUhM85W7AYKg7k2kaj";
	private static final String ACCESS_KEY_SECRET = "2bIE4AT75GxBrupiBr5Nfu7duRF5Px";
	// 填写Bucket名称，例如examplebucket。
	private static final String BUCKET_NAME = "cgt-java2501";

	public static String uploadFile(String objectName, InputStream inputStream) throws Exception {
		// 创建OSSClient实例。
		OSS ossClient = new OSSClientBuilder().build(ENDPOINT, ACCESS_KEY_ID, ACCESS_KEY_SECRET);

		//公网访问地址
		String url = "";
		try {
			// 创建PutObjectRequest对象。
			PutObjectRequest putObjectRequest = new PutObjectRequest(BUCKET_NAME, objectName, inputStream);
			// 创建PutObject请求。
			PutObjectResult result = ossClient.putObject(putObjectRequest);
			//https://java2403-mall.oss-cn-beijing.aliyuncs.com/1.jpg
			//url组层：https://bucket名称.区域节点/objectName
			url = "https://" + BUCKET_NAME + "." + ENDPOINT.substring(ENDPOINT.lastIndexOf("/") + 1) + "/" + objectName;
		} catch (OSSException oe) {
			System.out.println("Caught an OSSException, which means your request made it to OSS, "
					+ "but was rejected with an error response for some reason.");
			System.out.println("Error Message:" + oe.getErrorMessage());
			System.out.println("Error Code:" + oe.getErrorCode());
			System.out.println("Request ID:" + oe.getRequestId());
			System.out.println("Host ID:" + oe.getHostId());
		} catch (ClientException ce) {
			System.out.println("Caught an ClientException, which means the client encountered "
					+ "a serious internal problem while trying to communicate with OSS, "
					+ "such as not being able to access the network.");
			System.out.println("Error Message:" + ce.getMessage());
		} finally {
			if (ossClient != null) {
				ossClient.shutdown();
			}
		}
		return url;
	}

	public static void deleteFile(String url) {
		// 创建OSSClient实例。
		OSS ossClient = new OSSClientBuilder().build(ENDPOINT, ACCESS_KEY_ID, ACCESS_KEY_SECRET);
		try {
			// 删除文件或目录。如果要删除目录，目录必须为空。
			ossClient.deleteObject(BUCKET_NAME, url.substring(url.lastIndexOf("/") + 1));
		} catch (OSSException oe) {
			System.out.println("Caught an OSSException, which means your request made it to OSS, "
					+ "but was rejected with an error response for some reason.");
			System.out.println("Error Message:" + oe.getErrorMessage());
			System.out.println("Error Code:" + oe.getErrorCode());
			System.out.println("Request ID:" + oe.getRequestId());
			System.out.println("Host ID:" + oe.getHostId());
		} catch (ClientException ce) {
			System.out.println("Caught an ClientException, which means the client encountered "
					+ "a serious internal problem while trying to communicate with OSS, "
					+ "such as not being able to access the network.");
			System.out.println("Error Message:" + ce.getMessage());
		} finally {
			if (ossClient != null) {
				ossClient.shutdown();
			}
		}
	}
}
